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Author Topic: Small sucking noise from rear of plenum....  (Read 2023 times)

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Cliffo B

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Re: Small sucking noise from rear of plenum....
« Reply #15 on: 12 April 2010, 18:49:17 »

Just to say Coastie I had problems with Vac system and went to main dealers for parts and finished up at local VX scrappers and came away with lots of tubeing, rubber elbows,plastic T pieces, for next to nowt, the very same parts are used on all Vx models in profusion.Hope this info helps :y
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feeutfo

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Re: Small sucking noise from rear of plenum....
« Reply #16 on: 12 April 2010, 18:54:15 »

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You have run over a small pigmy builder who is about to quote you on a job you dont need doing and hence the sucking of air through his teeth.

oooh, genna cost ya guv... :)

how does the vac pipe to servo come off mark?
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coastie123

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Re: Small sucking noise from rear of plenum....
« Reply #17 on: 12 April 2010, 19:16:26 »

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You have run over a small pigmy builder who is about to quote you on a job you dont need doing and hence the sucking of air through his teeth.


if only that were true!!!! :y
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coastie123

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Re: Small sucking noise from rear of plenum.. Update..
« Reply #18 on: 13 April 2010, 00:59:28 »

Hi guys just finished work...

On the way home I thought I would listen out for this sucking noise as the roads were quiet!!!

I coul hear it in the cab when I added a bit of right foot.... Well a bit more than a bit!!!

Will be having a good look round in morning but if anyone could shed some more light on way it could be apart from the vac pipes etc so I have some more things to look over - it would be greatful!!!
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Marks DTM Calib

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Re: Small sucking noise from rear of plenum....
« Reply #19 on: 13 April 2010, 10:05:45 »

The common issue I see on these is where the brake servo pipe has rubbed against the aircon pipe and created a hole (rear right of the plenum).....this is due to poor re-fit as there should be a bracket that spaces the two pipes apart.

Brake servo pipe just has a 19mm nut attaaching it to the plenum (counter hold teh plenum section wiht a 17mm and simply pushes into the servo.

The secret to removing the pipe from the servo is to wiggle it and hold it at a bit of an angle so the air can enter the servo around the rubber pipe fitting seal....once this is done it comes out easily.
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feeutfo

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Re: Small sucking noise from rear of plenum....
« Reply #20 on: 13 April 2010, 12:11:35 »

Quote
The common issue I see on these is where the brake servo pipe has rubbed against the aircon pipe and created a hole (rear right of the plenum).....this is due to poor re-fit as there should be a bracket that spaces the two pipes apart.

Brake servo pipe just has a 19mm nut attaaching it to the plenum (counter hold teh plenum section wiht a 17mm and simply pushes into the servo.

The secret to removing the pipe from the servo is to wiggle it and hold it at a bit of an angle so the air can enter the servo around the rubber pipe fitting seal....once this is done it comes out easily.
so just a push fit, but held in with vaceume?
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Marks DTM Calib

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Re: Small sucking noise from rear of plenum....
« Reply #21 on: 13 April 2010, 12:33:58 »

Quote
Quote
The common issue I see on these is where the brake servo pipe has rubbed against the aircon pipe and created a hole (rear right of the plenum).....this is due to poor re-fit as there should be a bracket that spaces the two pipes apart.

Brake servo pipe just has a 19mm nut attaaching it to the plenum (counter hold teh plenum section wiht a 17mm and simply pushes into the servo.

The secret to removing the pipe from the servo is to wiggle it and hold it at a bit of an angle so the air can enter the servo around the rubber pipe fitting seal....once this is done it comes out easily.
so just a push fit, but held in with vaceume?

Yep...its quite tight once the vac is released but very tight when its present!
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